139673235 has 32 divisors (see below), whose sum is σ = 241613568. Its totient is φ = 68492160.

The previous prime is 139673213. The next prime is 139673257. The reversal of 139673235 is 532376931.

139673235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139673213) and next prime (139673257).

It is not a de Polignac number, because 139673235 - 2⁸ = 139672979 is a prime.

It is a super-2 number, since 2×139673235² = 39017225150730450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (102060) is a multiple of the sum of its prime divisors (2835).

It is a junction number, because it is equal to n+sod(n) for n = 139673193 and 139673202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53920 + ... + 56450.

It is an arithmetic number, because the mean of its divisors is an integer number (7550424).

Almost surely, 2^139673235 is an apocalyptic number.

139673235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139673235 is a deficient number, since it is larger than the sum of its proper divisors (101940333).

139673235 is a wasteful number, since it uses less digits than its factorization.

139673235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835.

The product of its digits is 102060, while the sum is 39.

The square root of 139673235 is about 11818.3431579896. The cubic root of 139673235 is about 518.8451132513.

The spelling of 139673235 in words is "one hundred thirty-nine million, six hundred seventy-three thousand, two hundred thirty-five".